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soildata_template.cdl
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netcdf soildata {
dimensions:
lon = xlen ;
lat = ylen ;
depth = UNLIMITED ;
nb = 2 ;
variables:
double lon(lon) ;
lon:long_name = "longitude" ;
lon:units = "degrees_east" ;
lon:actual_range = xmin., xmax. ;
lon:axis = "X" ;
double lat(lat) ;
lat:long_name = "latitude" ;
lat:units = "degrees_north" ;
lat:actual_range = ymin., ymax. ;
lat:axis = "Y" ;
float depth(depth) ;
depth:long_name = "vertical position of layer midpoint (below soil surface)" ;
depth:units = "cm" ;
depth:positive = "down" ;
depth:bounds = "layer_bnds" ;
depth:axis = "Z" ;
float layer_bnds(depth,nb) ;
layer_bnds:units = "cm" ;
layer_bnds:positive = "down" ;
float dz(depth) ;
dz:long_name = "soil layer thickness" ;
dz:units = "cm" ;
float landfrac(lat, lon) ;
landfrac:long_name = "proportion of the gridcell that is ice-free land" ;
landfrac:units = "fraction" ;
landfrac:_FillValue = -9999.f ;
landfrac:missing_value = -9999.f ;
landfrac:actual_range = 100.f, -100.f ;
landfrac:source = "SET SOURCE" ;
landfrac:_Storage = "chunked" ;
landfrac:_ChunkSizes = ylen, xlen ;
landfrac:_DeflateLevel = 1 ;
byte WRB(lat, lon) ;
WRB:long_name = "Predicted WRB 2006 subgroup classes" ;
WRB:units = "class" ;
WRB:_FillValue = -1b ;
WRB:missing_value = -1b ;
WRB:actual_range = 0b, -1b ;
WRB:valid_range = 1b, 118b ;
WRB:source = "SoilGrids 2017" ;
WRB:_Storage = "chunked" ;
WRB:_ChunkSizes = ylen, xlen ;
WRB:_DeflateLevel = 1 ;
byte USDA(lat, lon) ;
USDA:long_name = "Predicted USDA 2014 suborder classes" ;
USDA:units = "class" ;
USDA:_FillValue = -1b ;
USDA:missing_value = -1b ;
USDA:actual_range = 0b, -1b ;
USDA:valid_range = 1b, 99b ;
USDA:source = "SoilGrids 2017" ;
USDA:_Storage = "chunked" ;
USDA:_ChunkSizes = ylen, xlen ;
USDA:_DeflateLevel = 1 ;
float thickness(lat, lon) ;
thickness:long_name = "average soil and sedimentary deposit thickness" ;
thickness:units = "m" ;
thickness:_FillValue = -9999.f ;
thickness:missing_value = -9999.f ;
thickness:actual_range = 100.f, -100.f ;
thickness:source = "Pelletier et al., 2016" ;
thickness:_Storage = "chunked" ;
thickness:_ChunkSizes = ylen, xlen ;
thickness:_DeflateLevel = 1 ;
short sand(depth, lat, lon) ;
sand:long_name = "sand content by mass" ;
sand:units = "fraction" ;
sand:_FillValue = -32768s ;
sand:missing_value = -32768s ;
sand:actual_range = 100.f, -100.f ;
sand:valid_range = 0s, 1000s ;
sand:scale_factor = 0.001f ;
sand:source = "SoilGrids 2020" ;
sand:_Storage = "chunked" ;
sand:_Shuffle = "true" ;
sand:_ChunkSizes = 1, ylen, xlen ;
sand:_DeflateLevel = 1 ;
short silt(depth, lat, lon) ;
silt:long_name = "silt content by mass" ;
silt:units = "fraction" ;
silt:_FillValue = -32768s ;
silt:missing_value = -32768s ;
silt:actual_range = 100.f, -100.f ;
silt:valid_range = 0s, 1000s ;
silt:scale_factor = 0.001f ;
silt:source = "SoilGrids 2020" ;
silt:_Storage = "chunked" ;
silt:_Shuffle = "true" ;
silt:_ChunkSizes = 1, ylen, xlen ;
silt:_DeflateLevel = 1 ;
short clay(depth, lat, lon) ;
clay:long_name = "clay content by mass" ;
clay:units = "fraction" ;
clay:_FillValue = -32768s ;
clay:missing_value = -32768s ;
clay:actual_range = 100.f, -100.f ;
clay:valid_range = 0s, 1000s ;
clay:scale_factor = 0.001f ;
clay:source = "SoilGrids 2020" ;
clay:_Storage = "chunked" ;
clay:_Shuffle = "true" ;
clay:_ChunkSizes = 1, ylen, xlen ;
clay:_DeflateLevel = 1 ;
short cfvo(depth, lat, lon) ;
cfvo:long_name = "coarse fragments by volume" ;
cfvo:units = "fraction" ;
cfvo:_FillValue = -32768s ;
cfvo:missing_value = -32768s ;
cfvo:actual_range = 100.f, -100.f ;
cfvo:valid_range = 0s, 1000s ;
cfvo:scale_factor = 0.001f ;
cfvo:source = "SoilGrids 2020" ;
cfvo:_Storage = "chunked" ;
cfvo:_Shuffle = "true" ;
cfvo:_ChunkSizes = 1, ylen, xlen ;
cfvo:_DeflateLevel = 1 ;
short soc(depth, lat, lon) ;
soc:long_name = "Soil organic carbon content by mass" ;
soc:units = "fraction" ;
soc:_FillValue = -32768s ;
soc:missing_value = -32768s ;
soc:actual_range = 100.f, -100.f ;
soc:valid_range = 0s, 10000s ;
soc:scale_factor = 0.0001f ;
soc:source = "SoilGrids 2020" ;
soc:_Storage = "chunked" ;
soc:_Shuffle = "true" ;
soc:_ChunkSizes = 1, ylen, xlen ;
soc:_DeflateLevel = 1 ;
short bdod(depth, lat, lon) ;
bdod:long_name = "SoilGrids bulk density" ;
bdod:units = "g cm-3" ;
bdod:_FillValue = -32768s ;
bdod:missing_value = -32768s ;
bdod:actual_range = 0.f, 0.f ;
bdod:scale_factor = 0.01f ;
bdod:source = "SoilGrids 2020" ;
bdod:_Storage = "chunked" ;
bdod:_ChunkSizes = 1, ylen, xlen ;
bdod:_DeflateLevel = 1 ;
float bulk(depth, lat, lon) ;
bulk:long_name = "calculated bulk density" ;
bulk:units = "g cm-3" ;
bulk:_FillValue = -9999.f ;
bulk:missing_value = -9999.f ;
bulk:actual_range = 100.f, -100.f ;
bulk:source = "Balland et al., 2008" ;
bulk:_Storage = "chunked" ;
bulk:_ChunkSizes = 1, ylen, xlen ;
bulk:_DeflateLevel = 1 ;
float Tsat(depth, lat, lon) ;
Tsat:long_name = "soil porosity (Theta-sat)" ;
Tsat:units = "fraction" ;
Tsat:_FillValue = -9999.f ;
Tsat:missing_value = -9999.f ;
Tsat:actual_range = 100.f, -100.f ;
Tsat:source = "Sandoval et al., 2024" ;
Tsat:_Storage = "chunked" ;
Tsat:_ChunkSizes = 1, ylen, xlen ;
Tsat:_DeflateLevel = 1 ;
float T33(depth, lat, lon) ;
T33:long_name = "soil water content at field capacity (-33 kPa)" ;
T33:units = "mm cm-1" ;
T33:_FillValue = -9999.f ;
T33:missing_value = -9999.f ;
T33:actual_range = 100.f, -100.f ;
T33:source = "Sandoval et al., 2024" ;
T33:_Storage = "chunked" ;
T33:_ChunkSizes = 1, ylen, xlen ;
T33:_DeflateLevel = 1 ;
float T1500(depth, lat, lon) ;
T1500:long_name = "soil water content at permanent wilting point (-1500 kPa)" ;
T1500:units = "mm cm-1" ;
T1500:_FillValue = -9999.f ;
T1500:missing_value = -9999.f ;
T1500:actual_range = 100.f, -100.f ;
T1500:source = "Sandoval et al., 2024" ;
T1500:_Storage = "chunked" ;
T1500:_ChunkSizes = 1, ylen, xlen ;
T1500:_DeflateLevel = 1 ;
float whc(depth, lat, lon) ;
whc:long_name = "water holding capacity defined as T33-T1500, reduced for coarse fragment volume" ;
whc:units = "mm cm-1" ;
whc:_FillValue = -9999.f ;
whc:missing_value = -9999.f ;
whc:actual_range = 100.f, -100.f ;
whc:_Storage = "chunked" ;
whc:_ChunkSizes = 1, ylen, xlen ;
whc:_DeflateLevel = 1 ;
float Ksat(depth, lat, lon) ;
Ksat:long_name = "saturated hydraulic conductivity" ;
Ksat:units = "mm h-1" ;
Ksat:_FillValue = -9999.f ;
Ksat:missing_value = -9999.f ;
Ksat:actual_range = 100.f, -100.f ;
Ksat:source = "Sandoval et al., 2024 (code only)" ;
Ksat:_Storage = "chunked" ;
Ksat:_ChunkSizes = 1, ylen, xlen ;
// global attributes:
:Conventions = "CF-1.11" ;
:title = "Primary and derived soil properties" ;
:citation1 = "Hengl, T., Mendes de Jesus, J., Heuvelink, G. B., Ruiperez Gonzalez, M., Kilibarda, M., Blagotic, A., Shangguan, W., Wright, M. N., Geng, X., Bauer-Marschallinger, B., Guevara, M. A., Vargas, R., MacMillan, R. A., Batjes, N. H., Leenaars, J. G., Ribeiro, E., Wheeler, I., Mantel, S., & Kempen, B. (2017). SoilGrids250m: Global gridded soil information based on machine learning. PLoS One, 12(2), e0169748. doi:10.1371/journal.pone.0169748" ;
:citation2 = "Pelletier, J. D., Broxton, P. D., Hazenberg, P., Zeng, X., Troch, P. A., Niu, G. Y., Williams, Z., Brunke, M. A., & Gochis, D. (2016). A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling. Journal of Advances in Modeling Earth Systems, 8(1), 41-65. doi:10.1002/2015ms000526" ;
:citation4 = "Balland, V., Pollacco, J. A. P., & Arp, P. A. (2008). Modeling soil hydraulic properties for a wide range of soil conditions. Ecological Modelling, 219(3-4), 300-316. doi:10.1016/j.ecolmodel.2008.07.009" ;
:citation3 = "Sandoval, D., Prentice, I. C., & Nóbrega, R. L. B. (2024). Simple process-led algorithms for simulating habitats (SPLASH v.2.0): robust calculations of water and energy fluxes. Geoscientific Model Development, 17(10), 4229-4309. doi:10.5194/gmd-17-4229-2024" ;
:node_offset = 1 ;
}